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/* Copyright 2019 Luca Fedeli
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef WARPX_amrex_qed_chi_functions_h_
#define WARPX_amrex_qed_chi_functions_h_
/**
* This header contains wrappers around functions provided by
* the PICSAR QED library to calculate the 'chi' parameter
* for photons or electrons and positrons.
*/
#include "QedWrapperCommons.H"
#include <picsar_qed/physics/chi_functions.hpp>
namespace QedUtils{
/**
* Function to calculate the 'chi' parameter for photons.
* Suitable for GPU kernels.
* @param[in] px,py,pz components of momentum (SI units)
* @param[in] ex,ey,ez components of electric field (SI units)
* @param[in] bx,by,bz components of magnetic field (SI units)
* @return chi parameter
*/
AMREX_GPU_DEVICE
AMREX_FORCE_INLINE
amrex::Real chi_photon(
const amrex::Real px, const amrex::Real py, const amrex::Real pz,
const amrex::Real ex, const amrex::Real ey, const amrex::Real ez,
const amrex::Real bx, const amrex::Real by, const amrex::Real bz)
{
namespace pxr_p = picsar::multi_physics::phys;
return pxr_p::chi_photon<amrex::Real, pxr_p::unit_system::SI>(
px, py, pz, ex, ey, ez, bx, by, bz);
}
/**
* Function to calculate the 'chi' parameter for electrons or positrons.
* Suitable for GPU kernels.
* @param[in] px,py,pz components of momentum (SI units)
* @param[in] ex,ey,ez components of electric field (SI units)
* @param[in] bx,by,bz components of magnetic field (SI units)
* @return chi parameter
*/
AMREX_GPU_DEVICE
AMREX_FORCE_INLINE
amrex::Real chi_ele_pos(
const amrex::Real px, const amrex::Real py, const amrex::Real pz,
const amrex::Real ex, const amrex::Real ey, const amrex::Real ez,
const amrex::Real bx, const amrex::Real by, const amrex::Real bz)
{
namespace pxr_p = picsar::multi_physics::phys;
return pxr_p::chi_ele_pos<amrex::Real, pxr_p::unit_system::SI>(
px, py, pz, ex, ey, ez, bx, by, bz);
}
//_________
}
#endif //WARPX_amrex_qed_chi_functions_h_
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